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authorZack Weinberg <zackw@panix.com>2016-07-13 15:20:29 -0400
committerZack Weinberg <zackw@panix.com>2016-09-23 08:43:56 -0400
commitf2bea4da2e65b5d91a23a01fb2062bcec33974aa (patch)
tree466d8cc7eb9f7baa3a54a3aed84c12264d40bceb /sysdeps/mach
parent11160cb76f56e0a711686e34881a4eaf1ad2fa0e (diff)
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Installed-header hygiene (BZ#20366): conditionally defined structures.
Several network-related structures are defined conditionally under __USE_MISC, but unconditionally used by other headers. The path of least resistance is usually to condition the uses on __USE_MISC as well. * sysdeps/mach/hurd/net/if_ppp.h * sysdeps/unix/sysv/linux/net/if_ppp.h: Only define struct ifpppstatsreq and struct ifpppcstatsreq if __USE_MISC is defined, to ensure struct ifreq is declared. * inet/netinet/ether.h: Condition all function prototypes on __USE_MISC, to ensure struct ether_addr is declared. sys/socket.h defines struct osockaddr only under __USE_MISC, whereas protocols/talkd.h requires it unconditionally. Here it doesn't make sense to condition the entire body of protocols/talkd.h on __USE_MISC. Rather than complicate sys/socket.h with a __need macro or duplicate the definition, I am introducing a new concept: tiny headers named bits/types/TYPE.h that define TYPE and nothing else. This can, I hope, ultimately replace *all* the __need macros. The guard macro for such headers will be __TYPE_defined, just in case application or third-party library code is looking at them. * socket/bits/types/struct_osockaddr.h: New header. * include/bits/types/struct_osockaddr.h: New wrapper. * socket/Makefile: Install the new header. * socket/sys/socket.h, inet/protocols/talkd.h: Refer to bits/types/struct_osockaddr.h for the definition of struct osockaddr.
Diffstat (limited to 'sysdeps/mach')
-rw-r--r--sysdeps/mach/hurd/net/if_ppp.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/net/if_ppp.h b/sysdeps/mach/hurd/net/if_ppp.h
index b210d7f..8ee620b 100644
--- a/sysdeps/mach/hurd/net/if_ppp.h
+++ b/sysdeps/mach/hurd/net/if_ppp.h
@@ -119,6 +119,8 @@ struct ppp_option_data {
int transmit;
};
+/* 'struct ifreq' is only available from net/if.h under __USE_MISC. */
+#ifdef __USE_MISC
struct ifpppstatsreq {
struct ifreq b;
struct ppp_stats stats; /* statistic information */
@@ -131,6 +133,7 @@ struct ifpppcstatsreq {
#define ifr__name b.ifr_ifrn.ifrn_name
#define stats_ptr b.ifr_ifru.ifru_data
+#endif
/*
* Ioctl definitions.